JP6839166B2 - Cellulose acetate composition - Google Patents
Cellulose acetate composition Download PDFInfo
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- JP6839166B2 JP6839166B2 JP2018500139A JP2018500139A JP6839166B2 JP 6839166 B2 JP6839166 B2 JP 6839166B2 JP 2018500139 A JP2018500139 A JP 2018500139A JP 2018500139 A JP2018500139 A JP 2018500139A JP 6839166 B2 JP6839166 B2 JP 6839166B2
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/06—Cellulose acetate, e.g. mono-acetate, di-acetate or tri-acetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
- C08L1/12—Cellulose acetate
Description
本発明は、特に大型成形品または形状の複雑な成形品の製造に好適なセルロースエステル組成物に関する。
背景技術The present invention relates to a cellulose ester composition particularly suitable for producing a large molded article or a molded article having a complicated shape.
Background technology
セルロースアセテート等のセルロースエステルは一般的に熱可塑性が乏しいため、通常は可塑剤を含む組成物として使用されている。
特許第５７９８６４０号公報には、セルロースエステルと式（I）、（II）、（III）で表されるアジピン酸エステルから選ばれる可塑剤を含むセルロースエステル組成物が記載されている。
前記組成物は、ＭＦＲによって表される高い熱可塑性（段落番号００４８）を有しており、得られた成形体のシャルピー衝撃強度なども高いことが記載されている。
発明の概要Cellulose esters such as cellulose acetate generally have poor thermoplasticity, and are therefore usually used as compositions containing plasticizers.
Japanese Patent No. 5798640 describes a cellulose ester composition containing a cellulose ester and a plasticizer selected from the adipate esters represented by the formulas (I), (II) and (III).
It is described that the composition has a high thermoplasticity (paragraph number 0048) represented by MFR, and the Charpy impact strength of the obtained molded product is also high.
Outline of the invention
本発明は、流動性が良く、得られた成形品の耐熱性も良く、特に大型成形品または形状の複雑な成形品の製造に適したセルロースアセテート組成物を提供することを課題とする。 An object of the present invention is to provide a cellulose acetate composition having good fluidity and good heat resistance of the obtained molded product, which is particularly suitable for producing a large-sized molded product or a molded product having a complicated shape.
本発明は、（Ａ）６％粘度が９０mPa・s未満であるセルロースアセテート１００質量部に対して、（Ｂ）可塑剤８〜２２質量部を含有するセルロースアセテート組成物を提供する。 The present invention provides a cellulose acetate composition containing (B) 8 to 22 parts by mass of a plasticizer with respect to 100 parts by mass of (A) cellulose acetate having a 6% viscosity of less than 90 mPa · s.
また本発明は、（Ａ）６％粘度が９０mPa・s未満であるセルロースアセテート１００質量部に対して、（Ｂ）可塑剤８〜２２質量部を混合するセルロースアセテート組成物の製造方法を提供する。 The present invention also provides a method for producing a cellulose acetate composition in which (B) 8 to 22 parts by mass of a plasticizer is mixed with 100 parts by mass of (A) cellulose acetate having a 6% viscosity of less than 90 mPa · s. ..
本発明の組成物は、流動性が良く、成形性が良いので、大型成形品または形状の複雑な成形品の製造用として適している。また、本発明の組成物から得られた成形品は、荷重たわみ温度が高い。
発明を実施するための形態Since the composition of the present invention has good fluidity and moldability, it is suitable for manufacturing a large molded product or a molded product having a complicated shape. Further, the molded product obtained from the composition of the present invention has a high deflection temperature under load.
Mode for carrying out the invention
［セルロースアセテート組成物］
＜（Ａ）成分＞
（Ａ）成分のセルロースアセテートは６％粘度が９０mPa・s未満であり、好ましくは５〜７０mPa・sであり、より好ましくは１０〜６０mPa・sである。
（Ａ）成分のセルロースアセテートは、６％粘度が９０mPa・s未満のセルロースアセテートのみからなるものでもよいし、６％粘度の異なる２種類以上のセルロースアセテートの混合物であってもよい。
但し、６％粘度の異なる２種類以上のセルロースアセテートの混合物を使用したときであっても、（Ａ）成分として使用するセルロースアセテートの６％粘度が９０mPa・s未満になるようにする必要がある。
（Ａ）成分のセルロースアセテートは、６％粘度が９０mPa・s未満のセルロースアセテートのみからなるものであるとき、粘度平均重合度は１８０よりも小さい。
（Ａ）成分のセルロースアセテートは、平均置換度が２．７以下のセルロースアセテートが好ましい。[Cellulose Acetate Composition]
<Ingredient (A)>
The cellulose acetate of the component (A) has a 6% viscosity of less than 90 mPa · s, preferably 5 to 70 mPa · s, and more preferably 10 to 60 mPa · s.
The cellulose acetate as the component (A) may consist only of cellulose acetate having a 6% viscosity of less than 90 mPa · s, or may be a mixture of two or more types of cellulose acetate having different 6% viscosities.
However, even when a mixture of two or more types of cellulose acetate having different 6% viscosities is used, it is necessary to make the 6% viscosity of the cellulose acetate used as the component (A) less than 90 mPa · s. ..
The cellulose acetate as the component (A) has a viscosity average degree of polymerization of less than 180 when it is composed of only cellulose acetate having a 6% viscosity of less than 90 mPa · s.
The cellulose acetate as the component (A) is preferably cellulose acetate having an average degree of substitution of 2.7 or less.
（Ａ）成分のセルロースアセテートの６％粘度は、下記の方法で測定できる。
三角フラスコに乾燥試料３．００ｇ、９５％アセトン水溶液を３９．９０ｇ入れ、密栓して約１．５時間攪拌する。その後、回転振盪機で約１時間振盪して完溶させる。得られた６ｗｔ／ｖｏｌ％の溶液を所定のオストワルド粘度計の標線まで移し、２５±１℃で約１５分間整温する。計時標線間の流下時間を測定し、次式（１）により６％粘度を算出する。
６％粘度（mPa・s）＝流下時間（s）×粘度計係数 （１）The 6% viscosity of the cellulose acetate component (A) can be measured by the following method.
Put 3.00 g of a dry sample and 39.90 g of a 95% aqueous acetone solution in an Erlenmeyer flask, close the stopper, and stir for about 1.5 hours. Then, shake with a rotary shaker for about 1 hour to completely dissolve. The obtained 6 wt / vol% solution is transferred to a predetermined Ostwald viscometer and adjusted at 25 ± 1 ° C. for about 15 minutes. The flow time between the timekeeping marks is measured, and the 6% viscosity is calculated by the following formula (1).
6% viscosity (mPa · s) = flow time (s) x viscometer coefficient (1)
粘度計係数は、粘度計校正用標準液［昭和石油社製、商品名「ＪＳ−２００」（ＪＩＳ Ｚ ８８０９に準拠）］を用いて上記と同様の操作で流下時間を測定し、次式（２）より求める。
粘度計係数
＝｛標準液絶対粘度（mPa・s）×溶液の密度（０．８２７g/cm3）｝
／｛標準液の密度（g/cm3）×標準液の流下秒数（s）｝ （２）The viscometer coefficient is determined by measuring the flow time using the standard solution for viscometer calibration [Showa Sekiyu Co., Ltd., trade name "JS-200" (based on JIS Z 8809)] in the same manner as above, and using the following formula ( Obtained from 2).
Viscometer coefficient = {Standard solution absolute viscosity (mPa · s) x solution density (0.827 g / cm 3 )}
/ {Density of standard solution (g / cm 3 ) x number of seconds of standard solution flowing down (s)} (2)
粘度平均重合度は、宇田らの極限粘度法（宇田和夫、斉藤秀夫、繊維学会誌、第１８巻第１号、１０５〜１２０頁、１９６２年）により測定できる。なお、溶媒はセルロースアセテート（セルロースジアセテート等）の置換度などに応じて選択できる。例えば、メチレンクロライド／メタノール＝９／１（重量比）の混合溶液にセルロースアセテートを溶解し、所定の濃度ｃ（２．００ｇ／Ｌ）の溶液を調製し、この溶液をオストワルド粘度計に注入し、２５℃で粘度計の刻線間を溶液が通過する時間ｔ（秒）を測定する。一方、前記混合溶媒単独についても上記と同様にして通過時間to（秒）を測定し、下記式（３）〜（５）に従って、粘度平均重合度を算出できる。
ηｒｅｌ＝ｔ／ｔo （３）
［η］＝（ｌｎηｒｅｌ）／ｃ （４）
ＤＰ＝［η］／（６×１０−４） （５）
（式中、ｔは溶液の通過時間（秒）、ｔoは溶媒の通過時間（秒）、ｃは溶液のセルロースアセテート濃度（ｇ／Ｌ）、ηｒｅｌは相対粘度、［η］は極限粘度、ＤＰは平均重合度を示す）The viscosity average degree of polymerization can be measured by the ultimate viscosity method of Uda et al. (Kazuo Uda, Hideo Saito, Journal of the Textile Society, Vol. 18, No. 1, pp. 105-120, 1962). The solvent can be selected according to the degree of substitution of cellulose acetate (cellulose diacetate or the like). For example, cellulose acetate is dissolved in a mixed solution of methylene chloride / methanol = 9/1 (weight ratio) to prepare a solution having a predetermined concentration c (2.00 g / L), and this solution is injected into an Ostwald viscometer. At 25 ° C., the time t (seconds) for the solution to pass between the engraved lines of the viscometer is measured. Meanwhile, the even measure the transit time t o (s) in the same manner as described above for the mixed solvent alone, according to the following equation (3) to (5), it can be calculated viscosity average degree of polymerization.
η rel = t / t o ( 3)
[Η] = (lnη rel ) / c (4)
DP = [η] / (6 × 10 -4 ) (5)
(Wherein, t is the solution passage time (sec), t o is the transit time (in seconds), cellulose acetate concentration of c is the solution (g / L of the solvent), eta rel is the relative viscosity, [eta] is an intrinsic viscosity , DP indicates average degree of polymerization)
（Ａ）成分のセルロースアセテートとして６％粘度の異なる２種類以上のセルロースアセテートの混合物を使用するときは、６％粘度が９０mPa・s未満であるセルロースアセテート２種類以上の混合物、ないしは６％粘度が９０mPa・s未満であるセルロースアセテートと６％粘度が９０mPa・s以上であり、好ましくは９０〜１３０mPa・sであるセルロースアセテートの混合物を使用することができる。
６％粘度が９０mPa・s未満であるセルロースアセテートと６％粘度が９０mPa・s以上であるセルロースアセテートの混合割合は、混合物の６％粘度が９０mPa・s未満になるようにして混合すればよい。
例えば、６％粘度が９０mPa・s未満であるセルロースアセテート４０〜１００質量％と６％粘度が９０mPa・s以上であるセルロースアセテート０〜６０質量％にすることができる。When a mixture of two or more types of cellulose acetate having different 6% viscosities is used as the component cellulose acetate, the mixture of two or more types of cellulose acetate having a 6% viscosity of less than 90 mPa · s, or the 6% viscosity is high. A mixture of cellulose acetate having a viscosity of less than 90 mPa · s and cellulose acetate having a 6% viscosity of 90 mPa · s or more, preferably 90 to 130 mPa · s can be used.
The mixing ratio of the cellulose acetate having a 6% viscosity of less than 90 mPa · s and the cellulose acetate having a 6% viscosity of 90 mPa · s or more may be such that the 6% viscosity of the mixture is less than 90 mPa · s.
For example, cellulose acetate having a 6% viscosity of less than 90 mPa · s can be 40 to 100% by mass, and cellulose acetate having a 6% viscosity of 90 mPa · s or more can be 0 to 60% by mass.
＜（Ｂ）成分＞
（Ｂ）成分の可塑剤は、セルロースアセテートの可塑剤として使用されている公知の可塑剤（例えば、特許第５７９８６４０号公報に記載の可塑剤）を使用することができるが、それらの中でもアジピン酸エステルが好ましい。
アジピン酸エステルとしては、アジピン酸ジブチル、アジピン酸ジオクチル、アジピン酸ブトキシエトキシエチル・ベンジル、アジピン酸ジブトキシエトキシエチルなどを挙げることができる。
またアジピン酸エステルとしては、特許第５７９８６４０号公報の特許請求の範囲に記載された式（I）、（II）、（III）、（IV）、（V）、及び（VI）で示されるアジピン酸エステルのいずれか又は組み合わせも使用することができる。<Ingredient (B)>
As the plasticizer of the component (B), a known plasticizer used as a plasticizer for cellulose acetate (for example, the plasticizer described in Japanese Patent No. 5798640) can be used, and among them, adipate acid. Esters are preferred.
Examples of the adipic acid ester include dibutyl adipate, dioctyl adipate, butoxyethoxyethyl benzyl adipic acid, and dibutoxyethoxyethyl adipate.
The adipate ester is an adipate represented by the formulas (I), (II), (III), (IV), (V), and (VI) described in the claims of Japanese Patent No. 5798640. Any or combination of acid esters can also be used.
（Ａ）成分と（Ｂ）成分の含有割合は、（Ａ）成分１００質量部に対して（Ｂ）成分は８〜２２質量部であり、好ましくは１０〜２０質量部、より好ましくは１０〜１８質量部、更に好ましくは１０〜１６質量部である。 The content ratio of the component (A) and the component (B) is 8 to 22 parts by mass, preferably 10 to 20 parts by mass, and more preferably 10 to 10 parts by mass with respect to 100 parts by mass of the component (A). It is 18 parts by mass, more preferably 10 to 16 parts by mass.
本発明の組成物は、さらに充填剤を含有することができる。
充填剤としては、繊維状充填剤、非繊維状充填剤（粉粒状又は板状充填剤など）が含まれ、例えば、特開２００５−１９４３０２号公報の段落番号００２５〜００３２に記載のものを挙げることができる。
充填剤の含有割合は、（Ａ）成分のセルロースエステル１００質量部に対して、５〜５０質量部が好ましく、より好ましくは５〜４０質量部、さらに好ましくは５〜３０質量部である。The composition of the present invention can further contain a filler.
Examples of the filler include fibrous fillers and non-fibrous fillers (powder-granular or plate-like fillers, etc.), and examples thereof include those described in paragraphs 0025 to 0032 of JP-A-2005-194302. be able to.
The content ratio of the filler is preferably 5 to 50 parts by mass, more preferably 5 to 40 parts by mass, and further preferably 5 to 30 parts by mass with respect to 100 parts by mass of the cellulose ester of the component (A).
本発明の組成物は、特開２００５−１９４３０２号公報の段落番号００３５〜００４２に記載のエポキシ化合物、段落番号００４３〜００５２に記載の有機酸、チオエーテル、亜リン酸エステル化合物等の安定化剤を含有することができる。 The composition of the present invention contains stabilizers such as the epoxy compounds described in paragraphs 0035 to 0042 of JP-A-2005-194302 and the organic acids, thioethers and phosphite ester compounds described in paragraphs 0043 to 0052. Can be contained.
本発明の組成物は、用途に応じて、慣用の添加剤、例えば、他の安定化剤（例えば、酸化防止剤、紫外線吸収剤、熱安定剤、耐光安定剤など）、着色剤（染料、顔料など）、難燃剤、帯電防止剤、滑剤、アンチブロッキング剤、分散剤、流動化剤、ドリッピング防止剤、抗菌剤等を含んでいてもよい。 Depending on the application, the composition of the present invention may be used as a conventional additive, for example, another stabilizer (for example, an antioxidant, an ultraviolet absorber, a heat stabilizer, a light-resistant stabilizer, etc.), a colorant (dye, etc.). Pigments, etc.), flame retardants, antistatic agents, lubricants, anti-blocking agents, dispersants, fluidizing agents, anti-dripping agents, antibacterial agents and the like.
本発明の組成物は、例えば、各成分をタンブラーミキサー、ヘンシェルミキサー、リボンミキサー、ニーダーなどの混合機を用いて乾式又は湿式で混合して調製してもよい。
さらに、前記混合機で予備混合した後、一軸又は二軸押出機などの押出機で混練してペレットに調製する方法、加熱ロールやバンバリーミキサー等の混練機で溶融混練して調製する方法を適用することができる。The composition of the present invention may be prepared, for example, by mixing each component dry or wet using a mixer such as a tumbler mixer, a Henschel mixer, a ribbon mixer, or a kneader.
Further, a method of premixing with the mixer and then kneading with an extruder such as a single-screw or twin-screw extruder to prepare pellets, or a method of melt-kneading with a kneader such as a heating roll or a Banbury mixer is applied. can do.
本発明の組成物は、射出成形、押出成形、真空成形、異型成形、発泡成形、インジェクションプレス、プレス成形、ブロー成形、ガス注入成形等によって各種成形品に成形することができる。 The composition of the present invention can be molded into various molded products by injection molding, extrusion molding, vacuum molding, profile molding, foam molding, injection press, press molding, blow molding, gas injection molding and the like.
本発明の組成物のＩＳＯ１１３３に準拠したメルトフローレート（以下、ＭＦＲという）（２２０℃、荷重１０ｋｇで１０分間に流出する樹脂の重量（ｇ／１０ｍｉｎ））は５以上が好ましく、５〜４０がより好ましい。
本発明の組成物から得られた成形体のＩＳＯ０７５に準拠した荷重たわみ温度（荷重１．８０ＭＰａ）は、６５℃以上が好ましく、７０℃以上がより好ましい。The melt flow rate (hereinafter referred to as MFR) (hereinafter referred to as MFR) (weight of the resin flowing out in 10 minutes at 220 ° C. and a load of 10 kg) in accordance with ISO1133 of the composition of the present invention is preferably 5 or more, preferably 5 to 40. More preferred.
The deflection temperature under load (load 1.80 MPa) of the molded product obtained from the composition of the present invention in accordance with ISO075 is preferably 65 ° C. or higher, more preferably 70 ° C. or higher.
［セルロースアセテート組成物の製造方法］
本発明は、（Ａ）６％粘度が９０mPa・s未満であるセルロースアセテート１００質量部に対して、
（Ｂ）可塑剤８〜２２質量部を混合するセルロースアセテート組成物の製造方法である。
本発明のセルロースアセテート組成物の製造方法は、本発明のセルロースアセテート組成物で述べた事項を適宜適用することができる。[Method for producing cellulose acetate composition]
The present invention relates to (A) 100 parts by mass of cellulose acetate having a 6% viscosity of less than 90 mPa · s.
(B) A method for producing a cellulose acetate composition in which 8 to 22 parts by mass of a plasticizer is mixed.
As the method for producing a cellulose acetate composition of the present invention, the matters described in the cellulose acetate composition of the present invention can be appropriately applied.
本発明のセルロースアセテート組成物の製造方法において、（Ａ）成分のセルロースアセテートとして６％粘度の異なる２種類以上のセルロースアセテートの混合物を使用することができる。
（Ａ）成分のセルロースアセテートとして６％粘度の異なる２種類以上のセルロースアセテートの混合物を使用するときは、６％粘度が９０mPa・s未満であるセルロースアセテート２種類以上の混合物、ないしは６％粘度が９０mPa・s未満であるセルロースアセテートと６％粘度が９０mPa・s以上であり、好ましくは９０〜１３０mPa・sであるセルロースアセテートの混合物を使用することができる。
６％粘度が９０mPa・s未満であるセルロースアセテートと６％粘度が９０mPa・s以上であるセルロースアセテートの混合割合は、混合物の６％粘度が９０mPa・s未満になるようにして混合すればよい。
例えば、６％粘度が９０mPa・s未満であるセルロースアセテート４０〜１００質量％と６％粘度が９０mPa・s以上であるセルロースアセテート０〜６０質量％にすることができる。
実施例In the method for producing a cellulose acetate composition of the present invention, a mixture of two or more types of cellulose acetate having different 6% viscosities can be used as the cellulose acetate of the component (A).
When a mixture of two or more types of cellulose acetate having different 6% viscosities is used as the component cellulose acetate, the mixture of two or more types of cellulose acetate having a 6% viscosity of less than 90 mPa · s, or the 6% viscosity is high. A mixture of cellulose acetate having a viscosity of less than 90 mPa · s and cellulose acetate having a 6% viscosity of 90 mPa · s or more, preferably 90 to 130 mPa · s can be used.
The mixing ratio of the cellulose acetate having a 6% viscosity of less than 90 mPa · s and the cellulose acetate having a 6% viscosity of 90 mPa · s or more may be such that the 6% viscosity of the mixture is less than 90 mPa · s.
For example, cellulose acetate having a 6% viscosity of less than 90 mPa · s can be 40 to 100% by mass, and cellulose acetate having a 6% viscosity of 90 mPa · s or more can be 0 to 60% by mass.
Example
実施例および比較例
ヘンシェルミキサーを用いて、ミキサー内の摩擦熱で７０℃以上となるように各組成物を攪拌混合した後、二軸押出機（シリンダー温度：２００℃、ダイス温度：２２０℃）に供給し、押し出してペレット化した。
得られたペレットを、射出成形機に供給して、シリンダー温度２２０℃、金型温度５０℃、成形サイクル３０秒（射出１５秒、冷却時間１５秒）の条件で試験片を射出成形して、各評価試験に使用した。Example and Comparative Example Using a Henshell mixer, each composition is stirred and mixed so that the frictional heat in the mixer becomes 70 ° C. or higher, and then a twin-screw extruder (cylinder temperature: 200 ° C., die temperature: 220 ° C.). Was fed to and extruded into pellets.
The obtained pellets were supplied to an injection molding machine, and a test piece was injection-molded under the conditions of a cylinder temperature of 220 ° C., a mold temperature of 50 ° C., and a molding cycle of 30 seconds (injection 15 seconds, cooling time 15 seconds). Used for each evaluation test.
（６％粘度）
下記（Ａ）成分の乾燥試料３．００ｇと、９５％アセトン水溶液３９．９０ｇを三角フラスコに入れ、密栓して約１．５時間攪拌した。その後、回転振盪機で約１時間振盪して完溶させた。得られた６ｗｔ／ｖｏｌ％の溶液を所定のオストワルド粘度計の標線まで移し、２５±１℃で約１５分間整温した。計時標線間の流下時間を測定し、前記の式（１）により６％粘度を算出した。
６％粘度（mPa・s）＝流下時間（s）×粘度計係数 （１）(6% viscosity)
3.00 g of a dry sample of the following component (A) and 39.90 g of a 95% aqueous acetone solution were placed in an Erlenmeyer flask, sealed tightly, and stirred for about 1.5 hours. Then, it was shaken with a rotary shaker for about 1 hour to completely dissolve it. The obtained 6 wt / vol% solution was transferred to a predetermined Ostwald viscometer and adjusted at 25 ± 1 ° C. for about 15 minutes. The flow time between the timed markers was measured, and the 6% viscosity was calculated by the above formula (1).
6% viscosity (mPa · s) = flow time (s) x viscometer coefficient (1)
粘度計係数は、粘度計校正用標準液［昭和石油社製、商品名「ＪＳ−２００」（ＪＩＳ Ｚ ８８０９に準拠）］を用いて上記と同様の操作で流下時間を測定し、前記の式（２）より求めた。
粘度計係数
＝｛標準液絶対粘度（mPa・s）×溶液の密度（０．８２７g/cm3）｝
／｛標準液の密度（g/cm3）×標準液の流下秒数（s）｝ （２）For the viscometer coefficient, the flow time is measured by the same operation as above using a standard solution for viscometer calibration [manufactured by Showa Sekiyu Co., Ltd., trade name "JS-200" (based on JIS Z 8809)], and the above formula is used. Obtained from (2).
Viscometer coefficient = {Standard solution absolute viscosity (mPa · s) x solution density (0.827 g / cm 3 )}
/ {Density of standard solution (g / cm 3 ) x number of seconds of standard solution flowing down (s)} (2)
（ＭＦＲ）
ＭＦＲ（ｇ／１０ｍｉｎ）は、ＩＳＯ１１３３に基づいて、温度２２０℃及び荷重１０ｋｇの条件で測定した。ＭＦＲが大きいほど、流動性が良いことを示している。
（成形性）
成形性については次の基準で評価した。
○：ＭＦＲが５以上であるもの
×：ＭＦＲが５未満であるもの(MFR)
MFR (g / 10min) was measured based on ISO1133 under the conditions of a temperature of 220 ° C. and a load of 10 kg. The larger the MFR, the better the liquidity.
(Moldability)
The moldability was evaluated according to the following criteria.
◯: MFR of 5 or more ×: MFR of less than 5
（押出性）
二軸押出機のダイスから押出されたストランドを水槽にて冷却し、ペレタイザーにてペレット化する過程および得られたペレットの形状を肉眼で観察して、次の基準で評価した。
○：連続的に均一なストランドが形成され、得られたペレットが全て円柱形状のもの。
×：ストランドが不均一な部分が多くなり、得られたペレットの形状にばらつきが多かったもの。(Extrudability)
The strands extruded from the die of the twin-screw extruder were cooled in a water tank and pelletized with a pelletizer, and the shape of the obtained pellets was visually observed and evaluated according to the following criteria.
◯: Uniform strands are continuously formed, and all the obtained pellets are cylindrical.
X: There were many non-uniform strands, and the shape of the obtained pellets varied widely.
（荷重たわみ温度）
荷重たわみ温度（℃）は、ＩＳＯ７５に準拠して、荷重１．８０ＭＰａの条件で測定した。(Deflection temperature under load)
The deflection temperature under load (° C.) was measured under the condition of a load of 1.80 MPa in accordance with ISO75.
（Ａ）成分（セルロースアセテート）
Ｌ−５０：６％粘度１１０mPa・s（粘度平均重合度１８０）、（株）ダイセル製
Ｌ−４０：６％粘度８７mPa・s（粘度平均重合度１７０）、（株）ダイセル製
ＣＳ：６％粘度５６mPa・s、Sichuan Yibin PUSH Group Co., Ltd.製
Ｌ−２０：６％粘度５０mPa・s（粘度平均重合度１２０）、（株）ダイセル製
ＰＣ／ＦＧ：６％粘度５０mPa・s、Sichuan Yibin PUSH Group Co., Ltd.製
（Ｂ）成分（可塑剤）
アジピン酸エステル：ＤＡＩＦＡＴＴＹ−１０１大八化学工業（株）製(A) Ingredient (Cellulose Acetate)
L-50: 6% viscosity 110 mPa · s (viscosity average degree of polymerization 180), manufactured by Daicel Co., Ltd. L-40: 6% viscosity 87 mPa · s (viscosity average degree of polymerization 170), manufactured by Daicel Co., Ltd. CS: 6% Viscosity 56mPa ・ s, manufactured by Sichuan Yibin PUSH Group Co., Ltd. L-20: 6% viscosity 50mPa ・ s (viscosity average degree of polymerization 120), PC / FG manufactured by Daicel Co., Ltd .: 6% viscosity 50mPa ・ s, Sichuan Made by Yibin PUSH Group Co., Ltd. (B) Ingredient (polymer)
Adipate: DAIFATTY-101 Daihachi Chemical Industry Co., Ltd.
（Ａ）成分のセルロースアセテートとして６％粘度が９０mPa・s未満のものを使用することで、（Ｂ）成分の可塑剤の使用量を抑制しても、組成物のＭＦＲが良く、押出性が良く、成形性も良かった。また、成形品の荷重たわみ温度も高かった。 （Ａ）成分のセルロースアセテートとして６％粘度が９０mPa・sを超えるものを使用した比較例１は、（Ｂ）成分の可塑剤の使用量を抑制するとＭＦＲが小さくなり、成形性が低下した。
（Ａ）成分のセルロースアセテートとして６％粘度が９０mPa・sを超えるものを使用した比較例２、３は、（Ｂ）成分の可塑剤の使用量を増加させるとＭＦＲが大きくなり、押出性および成形性は良好であったが、成形品の荷重たわみ温度が大きく低下した。By using a cellulose acetate as the component (A) having a viscosity of less than 90 mPa · s, the MFR of the composition is good and the extrudability is good even if the amount of the plasticizer used as the component (B) is suppressed. It was good and the moldability was also good. In addition, the deflection temperature under load of the molded product was also high. In Comparative Example 1 in which the cellulose acetate of the component (A) having a 6% viscosity of more than 90 mPa · s was used, the MFR was reduced and the moldability was lowered when the amount of the plasticizer used as the component (B) was suppressed.
In Comparative Examples 2 and 3 in which the cellulose acetate of the component (A) having a 6% viscosity exceeding 90 mPa · s was used, the MFR increased as the amount of the plasticizer used as the component (B) was increased, and the extrudability and extrudability were increased. The moldability was good, but the deflection temperature under load of the molded product was greatly reduced.
本発明の組成物は、例えば、ＯＡ・家電機器分野、電気・電子分野、通信機器分野、サニタリー分野、自動車などの輸送車両分野、家具・建材などの住宅関連分野、雑貨分野などの各パーツ、ハウジングなどに使用することができる。
本発明の組成物は流動性と成形性が良いため、前記各用途の中でも、特に大型成形品または形状の複雑な成形品の製造用として適しており、さらに荷重たわみ温度が高いため、発熱部品を含む装置の外装材、直射日光に曝されるような屋外用途に適している。The composition of the present invention includes, for example, parts in the fields of OA / home appliances, electrical / electronic equipment, communication equipment, sanitary fields, transportation vehicles such as automobiles, housing-related fields such as furniture / building materials, and miscellaneous goods. It can be used for housings and the like.
Since the composition of the present invention has good fluidity and moldability, it is particularly suitable for manufacturing a large molded product or a molded product having a complicated shape among the above-mentioned applications, and since the deflection temperature under load is high, it is a heat-generating component. Suitable for exterior materials of equipment including, and for outdoor applications where it is exposed to direct sunlight.
Claims (7)
（Ｂ）アジピン酸エステルからなる可塑剤８〜２２質量部を含有するセルロースアセテート組成物であって、
前記セルロースアセテート組成物のＩＳＯ１１３３に準拠したメルトフローレート（２２０℃、荷重１０ｋｇ）（ｇ／１０ｍｉｎ）が５〜４０である、セルロースアセテート組成物。 (A) With respect to 100 parts by mass of cellulose acetate having a 6% viscosity of less than 90 mPa · s.
(B) A cellulose acetate composition containing 8 to 22 parts by mass of a plasticizer composed of an adipate ester .
A cellulose acetate composition having a melt flow rate (220 ° C., load of 10 kg) (g / 10 min) of 5 to 40 according to ISO 1133 of the cellulose acetate composition .
前記混合物が、６％粘度が９０mPa・s未満であるセルロースアセテート２種類以上の混合物、ないしは
６％粘度が９０mPa・s未満であるセルロースアセテート４０〜１００質量％と６％粘度が９０mPa・s以上であるセルロースアセテート０〜６０質量％の混合物である、請求項１記載のセルロースアセテート組成物。 Cellulose acetate as a component (A) is a mixture of cellulose acetate having 6% different viscosities.
The mixture is a mixture of two or more types of cellulose acetate having a 6% viscosity of less than 90 mPa · s, or 40 to 100% by mass of cellulose acetate having a 6% viscosity of less than 90 mPa · s and a 6% viscosity of 90 mPa · s or more. The cellulose acetate composition according to claim 1, which is a mixture of 0 to 60% by mass of certain cellulose acetate.
前記（Ａ）成分１００質量部に対して、前記（Ｂ）成分を混合するセルロースアセテート組成物の製造方法。 The method for producing a cellulose acetate composition according to claim 1.
A method for producing a cellulose acetate composition in which the component (B) is mixed with 100 parts by mass of the component (A).
前記混合物が、６％粘度が９０mPa・s未満であるセルロースアセテートが２種類以上の混合物、ないしは
６％粘度が９０mPa・s未満であるセルロースアセテート４０〜１００質量％と６％粘度が９０mPa・s以上であるセルロースアセテート０〜６０質量％の混合物である、請求項５記載のセルロースアセテート組成物の製造方法。 Cellulose acetate as a component (A) is a mixture of cellulose acetate having 6% different viscosities.
The mixture is a mixture of two or more types of cellulose acetate having a 6% viscosity of less than 90 mPa · s, or 40 to 100% by mass of cellulose acetate having a 6% viscosity of less than 90 mPa · s and a 6% viscosity of 90 mPa · s or more. The method for producing a cellulose acetate composition according to claim 5 , which is a mixture of 0 to 60% by mass of cellulose acetate.
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